STRAIGHTERLINE CHEMISTRY FINAL EXAM TEST WITH COMPLETE SOLUTIONS

STRAIGHTERLINE CHEMISTRY FINAL
EXAM TEST WITH COMPLETE
SOLUTIONS




What is the term used for findings that are summarized
based on a pattern or trend?
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - answer-a. Law


Which of the following is a tentative explanation for a set of
observations?
Select one:
a. Law

,b. Hypothesis
c. Theory
d. Phenomena
e. Prediction - answer-b. Hypothesis


If a liquid contains 60% sugar and 40% water throughout its
composition then what is it called?
Select one:
a. Solute
b. Compound
c. Homogeneous mixture
d. Heterogeneous mixture
e. Solvent - answer-c. Homogeneous mixture


Which of the following does not have a uniform composition
throughout?
Select one:
a. Element
b. Compound
c. Homogeneous mixture
d. Heterogeneous mixture
e. Solvent - answer-d. Heterogeneous mixture

,Given that 1 inch = 2.54 cm, 1.00 cm3 is equal to
Select one:
a. 16.4 in3
b. 6.45 in3
c. 0.394 in3
d. 0.155 in3
e. 0.0610 in3 - answer-e. 0.0610 in3


What terms defines a mass which is exactly equal to 1/12 the
mass of one carbon-12 atom?


Select one:
a. Isotope number
b. Mass number
c. Mass-to-charge ratio
d. Atomic number
e. Atomic mass unit - answer-e. Atomic mass unit


How many neutrons are there in an atom of lead whose mass
number is 208?

, Select one:
a. 82
b. 126
c. 208
d. 290
e. none of them - answer-b. 126


Which of these elements is chemically similar to magnesium?


Select one:
a. Sulfur
b. Calcium
c. Iron
d. Nickel
e. Potassium - answer-b. Calcium


C(graphite) and C(diamond) are examples of:


Select one:
a. isotopes of carbon.
b. allotropes of carbon.